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Water is crops

Water is jobs. Water is crops. Water is life. California’s Water Crisis Developing Solutions. Newpaper Headlines. Delta Improvement Strategy. Resource/Regulatory Strategy Near-Term Measures Bay-Delta Conservation Plan . Bay-Delta Conservation Plan. Legislative Framework

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Water is crops

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  1. Water is jobs Water is crops Water is life California’s Water Crisis Developing Solutions

  2. Newpaper Headlines

  3. Delta Improvement Strategy • Resource/Regulatory Strategy • Near-Term Measures • Bay-Delta Conservation Plan Bay-Delta Conservation Plan • Legislative Framework • Delta policy bills • Bond measure

  4. Resource/Regulatory StrategyBay-Delta Conservation Plan Bay-Delta Conservation Plan • Supports co-equal goals of “Delta Vision” • Delta ecosystem restoration • Water supply reliability • Ecosystem Improvement • Comprehensive multi-species/ecosystem approach • Habitat & flow improvements • Conveyance Improvements • Dual-intake approach • Other Stressors Control • Invasive species, toxics, unscreened diversions

  5. Bay-Delta Conservation PlanQuestions Everyone Wants Answers to • What will the project look like? • Where is the project? • How would it operate? Bay-Delta Conservation Plan • What will it cost? • How do we finance the costs? • How do we split the costs? • What are the benefits & risks? • What size should the project be? • What can be delivered with new conveyance? • What can be delivered without?

  6. Bay-Delta Conservation Plan Thru-Delta Conveyance Bay-Delta Conservation Plan Conveyance Options Sacramento • Two 3,000 cfs intakes, screens, pumps Sac River • 66 mi. existing levee retrofit • 12 mi. open canal • 9 to 11 operable barriers Stockton • 2 tunnels (4.5 mi. length) • New fish salvage facility SWP Pumps SJ River CVP Pumps 6

  7. Bay-Delta Conservation Plan Dual-Conveyance− East Alignment • Five 3,000 cfs intakes, screens, pumps Sacramento Sac River • 40 mi. open canal8 siphons; Pump #6 • 4 tunnels under rivers;2.2 mi. total length • Additional forebay Stockton SWP Pumps SJ River CVP Pumps 7

  8. Bay-Delta Conservation Plan Dual-Conveyance− West Alignment Sacramento • Five 3,000 cfs intakes, screens, pumps Sac River • 28 mi. open canal; 12 siphons • Pumping plant #6 • Two 17 mi. tunnels (37 ft. diameter) Stockton • 10 mi. open canal • Addl. forebay SWP Pumps SJ River CVP Pumps 8

  9. Bay-Delta Conservation Plan Dual-Conveyance − Central Tunnel Sacramento • Five 3,000 cfs intakes, screens, pumps Sac River • Regulating forebay(18,000 acres) • Pumping plant #6 • Two 35 mi. tunnels(37 ft diameter) Stockton • Additional forebay SWP Pumps SJ River CVP Pumps 9

  10. Bay-Delta Conservation Plan Dual-Conveyance − Intake Options Sacramento Sac River In-River Screen Option Stockton SWP Pumps SJ River CVP Pumps 10

  11. Bay-Delta Conservation Plan Dual-Conveyance − Intake Options Sacramento Sac River On-Bank Screen Option Stockton SWP Pumps SJ River CVP Pumps 11

  12. Bay-Delta Conservation Plan Dual-Conveyance − Intake Options Sacramento Sac River Cylindrical Screen Option Stockton SWP Pumps SJ River CVP Pumps 12

  13. Bay-Delta Conservation Plan Open Canal Proposal 700 ft. ~24 ft. depth 1,400 ft. Levees Up to 35 ft high Delta Cross Channel (500’ wide x 15’ deep) California Aqueduct (200’ wide x 30’ deep)

  14. Canal DredgingWalking Dragline

  15. Siphon Section River IsolatedFacility 182 ft. 4.0’ 4.0’ 26' 26' 30' 30' 34 ft.

  16. Tunnel Boring Machine • Inland Feeder Tunnel • 12 ft diameter = 1,000 cfs • Delta Tunnel • 2 @ 37 ft. diameter = 15,000 cfs

  17. History of Tunneling Roman Aqueduct • Transcontinental Railroad

  18. Tunnel Boring Machine Types

  19. Evolution of Tunnel Boring Machine Types • 1856 – Early TBMs • 1952 – Hard rock • 1962 – Pressure bulkhead • 1964 – Full-face slurry • 1966 – Earth pressure balance • 1972 – Double shield

  20. Tunnel Boring Machine Manufacturers

  21. Large Diameter Tunnels • 51 ft. – Shanghai, ChinaYangtze River highway tunnel; 2 bores • 30 ft. – Chicago, USA109 mile sewer overflow tunnel30 tunnel boring machines • 24 to 45 ft. – Cleveland, USASewer overflow tunnels • 33 ft. – NagarjunaSagar NP, India27 mile water supply tunnels • 41 ft. – Jinping, China40 mile hydroelectric tunnels • 44 ft. – Kuala Lumpur, MalaysiaDual-deck transportation/stormwater

  22. Tunnel Boring MachineSize • 600 ft. length • 37 ft. diameter • 8,000 hp engine • 40 ft per day • $45 – 50 M each • 20-25 crew per shift; 3 shifts/day • 600 ft. length

  23. New Delta ConveyanceTunnel Facts • 3.4 million cubic yards of concrete • Hoover Dam 3.25 million cy • 15 million cubic yards of tunnel muck • 1000 story football field • 3.8 million muck car trips • 260 million feet of reinforcing steel • 2 times around the world

  24. Tunnel Boring … how does it work?Cutting through the Soil/Rock

  25. Tunnel Boring … how does it work?Earth Pressure Balance TBM

  26. Tunnel Boring … how does it work?Earth Pressure Balance TBM • Alaska Viaduct • 54 ft. diameter • 2001– 2016

  27. Tunnel Boring … how does it work?Concrete Tunnel Segment Installation

  28. Tunnel Shaft ConstructionInitial Soil Stabilization Soil Stabilization Tunnel Shaft High Pressure Jet Grouting Shaft Construction

  29. Tunnel Shaft Construction Water Table Surface 150 ft. Tunnel Tunnel TunnelShaft Construction

  30. Tunnel Shaft Construction Water Table 150 ft. Tunnel Concrete

  31. New Delta Conveyance Cost Analysis Bay-Delta Conservation Plan * URS developed initial cost estimates; Second independent expert cost analysis from 5RMK Inc completed in Jan. 2010. * Includes 35% construction contingency on tunnel (25% on non-tunnel) and 18% for engineering/project management. East Canal ~ $8 billion * West Canal ~ $9 - 11 billion * All Tunnel ~ $10 -12 billion * Preliminary Subject to Revision

  32. New Delta Conveyance Water Supply Benefit Analysis Bay-Delta Conservation Plan • 2010 Deliveries • 30 – 50%: expected Table A deliveries • 600,000 – 1,000,000 AF: expected MWD deliveries Preliminary Subject to Revision

  33. New Delta Conveyance Water Supply Benefit Analysis Bay-Delta Conservation Plan • Without Improved Conveyance • 60% − average SWP Table A deliveries • 1.2 million AF − average MWD deliveries • With Improved Conveyance • 80% − average SWP Table A deliveries • 1.6 million AF − average MWD deliveries Preliminary Subject to Revision

  34. New Delta Conveyance Cost per Acre-Feet Bay-Delta Conservation Plan Preliminary Subject to Revision Preliminary Subject to Revision

  35. New Delta Conveyance Other Benefits • Water Quality • Reduced salinity, organic carbon, bromides • Reduced water treatment costs • Improved Reliability • Avoids seismic risks of levee failure • Avoids potential future regulatory restrictions Bay-Delta Conservation Plan Preliminary Subject to Revision

  36. New Delta Conveyance Risk Assessment Workshop • Over 100 technical experts • Planning & Permitting • Engineering & Operations • Procurement & Construction • Management & Oversight • Public Perception • Land Use • Reps from state, feds, water contractors & others • Focus on cost & schedule risks Bay-Delta Conservation Plan

  37. New Delta ConveyanceRisk Assessment Results Bay-Delta Conservation Plan • Top Cost Risks • Differing geotech conditions (during construction) • Differing geotech conditions (during design) • Potential habitat mitigation (terrestrial) • Available tunnel contractor pool • Inability to adjust construction activities to avoid delay

  38. New Delta ConveyanceRisk Assessment Results Bay-Delta Conservation Plan • Top Schedule Risks • Pump & valve procurement • Lawsuits • 401 certification from State Water Board • Changes in alignment due to external pressures • Federal 'Nexus' in construction projects

  39. Schedule • End of 2010 • Draft Conservation Plan • Draft EIR/S • End of 2011 • Final EIR/S • Permits • 2022 • Construction complete Preliminary Subject to Revision 39

  40. Randall D. Neudeck (213) 217-7537 rneudeck@mwdh2o.com An electronic copy of this presentation is located at: “ftp://blizzard.mwdh2o.com/baydelta/presentations” www.bewaterwise.com

  41. The Delta Sacramento Suisun Bay Stockton State & Federal Pumping Plants

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